Textbook Notes (363,460)
Canada (158,372)
Psychology (9,573)
PSYA01H3 (1,196)
Steve Joordens (1,052)
Chapter 4

Chapter Four Notes

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University of Toronto Scarborough
Steve Joordens

PSYA01H3 Chapter 4: - nerve cells of brain are organized in modules - modules: clusters of nerve cells that communicate with each other - brain has three major functions 1) controlling behaviour 2) processing and retaining the information we receive from the environment 3) regulating the bodys physiological processes - the nervous system consists of 2 divisions 1. Central Nervous System 2. Peripheral Nervous System - the brain and the spinal cord make up the central nervous system - the central nervous system communicates with the rest of the body through nerves - nerves are attached to the spinal cord and base of the brain; make up peripheral nervous system - human brain has three major parts 1) The brain stem 2) The cerebellum 3) Cerebral hemispheres - brain stem: primarily control of physiological functions and automatic behaviours - cerebral hemisphere: largest part of the brain; covered by cerebral cortex and containing parts of the brain that evolved most recently - cerebellum: primary function is to control and coordinate movements - brain encased in skull, and spinal cord runs through middle of vertabrae (a column of hollow bones) -> both brain and spinal cord enclosed by 3-layered set of membranes called meninges -> float in clear liquid called cerebrospinal fluid (CSF) - blood brain barrier: make it less likely that toxic chemicals found in what we eat or drink can find their way into the brain, where they might do damage to neurons - cerebral cortex: outer layer of the cerebral hemispheres of the brain -> referred to as grey matter -> perceptions take place, memories are stores, and plans are formulated and executed www.notesolution.com
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